船厂滑板大体积混凝土防裂控制措施

Crack control measures of slide plate mass concrete in a shipyard

船厂滑板大体积混凝土防裂一直是施工质量控制的重点和难点。原材料选用、混凝土配合比设计、施工工艺及养护管理等方面控制不当,温差较大将引起混凝土开裂,甚至贯通,沿着裂缝加快钢筋锈蚀,对结构物耐久性产生较大影响,对于沿海地区,腐蚀会成倍加快,因此滑板大体积混凝土防裂成为施工质量控制的重点。

Cracking prevention of shipyard skateboard mass concrete has always been the key and difficult point of control.If the raw materials,concrete mix ratio,construction technology and maintenance are not properly controlled,the concrete will crack or even penetrate through due to the large temperature difference,which will greatly affect the durability of structures,and accelerate the corrosion of steel bars along the cracks,especially in coastal areas,and the corrosion will be doubled.Therefore,cracking prevention of skateboard mass concrete in coastal environment becomes the key point of control.